feat(coplaner-upload): xlsx file upload rake task

Gemfile

@@ -35,6 +35,7 @@ gem 'jquery-rails'
 gem 'jquery-ui-rails'
 gem 'js-routes'
 gem 'lodash-rails'
+gem 'net-sftp'
 gem 'panter-rails-deploy'
 gem 'paperclip'
 gem 'paranoia'

Gemfile.lock

@@ -294,7 +294,9 @@ GEM
     multipart-post (2.1.1)
     net-scp (3.0.0)
       net-ssh (>= 2.6.5, < 7.0.0)
-    net-ssh (6.1.0)
+    net-sftp (3.0.0)
+      net-ssh (>= 5.0.0, < 7.0.0)
+    net-ssh (6.0.2)
     nio4r (2.5.4)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
@@ -590,6 +592,7 @@ DEPENDENCIES
   listen
   lodash-rails
   minitest
+  net-sftp
   overcommit
   panter-rails-deploy
   paperclip

app/controllers/coplaners_controller.rb

@@ -12,6 +12,14 @@ class CoplanersController < ApplicationController
     @event_volunteers = EventVolunteer.all.order(:id)
     @billing_expenses = BillingExpense.all.order(:id)
     @departments = Department.all.order(:id)
+    @group_offer_categories = GroupOfferCategory.all.order(:id)
+    respond_to do |format|
+      format.xlsx do
+        render xlsx: 'index',
+               filename: "aoz_freiwillige_#{Time.zone.now.strftime('%Y-%m-%dT%H%M%S')}"
+      end
+      format.html
+    end
   end
   # rubocop:enable Metrics/AbcSize
 end

app/views/coplaners/index.xlsx.axlsx

 wb = xlsx_package.workbook
 
-locals = axlsx_locals(wb, volunteers: @volunteers,
-                          clients: @clients,
-                          assignments: @assignments,
-                          group_offers: @group_offers,
-                          group_assignments: @group_assignments,
-                          hours: @hours,
-                          billing_expenses: @billing_expenses,
-                          events: @events,
-                          event_volunteers: @event_volunteers,
-                          departments: @departments,
-                          group_offer_categories: GroupOfferCategory.all.order(:id))
+locals = axlsx_locals(wb, volunteers: @volunteers || volunteers,
+                          clients: @clients || clients,
+                          assignments: @assignments || assignments,
+                          group_offers: @group_offers || group_offers,
+                          group_assignments: @group_assignments || group_assignments,
+                          hours: @hours || hours,
+                          billing_expenses: @billing_expenses || billing_expenses,
+                          events: @events || events,
+                          event_volunteers: @event_volunteers || event_volunteers,
+                          departments: @departments || departments,
+                          group_offer_categories: @group_offer_categories || group_offer_categories)
 
 ## Sheets
 #

lib/tasks/coplaner.rake

+require 'net/sftp'
+require 'tempfile'
+
+namespace :coplaner do
+  desc 'Create Coplaner XLSX file and upload it via SFTP'
+  task upload: :environment do
+    start_time = Time.zone.now
+    filename = "aoz_freiwillige_#{Time.zone.now.strftime('%Y-%m-%dT%H%M%S')}.xlsx"
+    puts <<~HEREDOC
+      Starting to render the Coplaner XLSX file: #{filename}
+
+      This may take up to a minute or depending on the host system and DB size even longer than that.
+
+      Just a moment please...
+
+    HEREDOC
+    @volunteers = Volunteer.all.order(:id)
+    @clients = Client.all.order(:id)
+    @assignments = Assignment.all.order(:id)
+    @group_offers = GroupOffer.all.order(:id)
+    @group_assignments = GroupAssignment.all.order(:id)
+    @hours = Hour.all.order(:id)
+    @events = Event.all.order(:id)
+    @event_volunteers = EventVolunteer.all.order(:id)
+    @billing_expenses = BillingExpense.all.order(:id)
+    @departments = Department.all.order(:id)
+    @group_offer_categories = GroupOfferCategory.all.order(:id)
+    action_view = ActionView::Base.new(ActionController::Base.view_paths, {
+      volunteers: @volunteers,
+      clients: @clients,
+      assignments: @assignments,
+      group_offers: @group_offers,
+      group_assignments: @group_assignments,
+      hours: @hours,
+      events: @events,
+      event_volunteers: @event_volunteers,
+      billing_expenses: @billing_expenses,
+      departments: @departments,
+      group_offer_categories: @group_offer_categories
+    })
+    action_view.class_eval do
+      # include any needed helpers (for the view)
+      include ApplicationHelper
+      include XlsHelper
+      include FormatHelper
+    end
+    rendered_xlsx = action_view.render template: 'coplaners/index.xlsx.axlsx'
+    tempfile = Tempfile.new(filename)
+    tempfile.write(rendered_xlsx)
+    puts <<~HEREDOC
+
+      Successfully rendered the Excel file
+
+      Filename: #{filename}
+      Size: #{tempfile.size / 1024} Kb
+      Render time: #{Time.zone.now - start_time} seconds
+
+    HEREDOC
+    sftp_credentials = {
+      host: ENV['SFTP_HOST'],
+      user: ENV['SFTP_USER'],
+      password: ENV['SFTP_PASS']
+    }
+    if sftp_credentials.values.map(&:blank?).any?
+      raise <<~HEREDOC
+        Missing required SFTP credetials to upload the coplaner XLSX file.
+
+        These are the required ENV variables:
+
+        - SFTP_HOST
+        - SFTP_USER
+        - SFTP_PASS
+
+      HEREDOC
+    end
+
+    puts <<~HEREDOC
+
+      Uploading the XLSX file to: #{sftp_credentials[:host]}
+
+    HEREDOC
+    Net::SFTP.start(ENV['SFTP_HOST'], ENV['SFTP_USER'], password: ENV['SFTP_PASS']) do |sftp|
+      sftp.upload!(tempfile.path, filename)
+    end
+    tempfile.unlink
+  end
+end